chain case fluid change

[kingedwards99]

Dumb question but i need to ask? I recently changed my chaincase fluid and on the dipstick it has a mark it says rev\std which means reverse and standard i got that but i am wondering is this a universal dipstick? or does it mean if you have reverse then the fluid should be up to the first line and if you don't then it should be to the top? or does it mean if you have it in reverse and check the fluid that it should be to that line?(which i doubt) any how i put the full 8.5 oz in and don't know if it will hurt it or not but i can take some out before i ride this winter. does anyone know the exact amount needed for the 08 fx nytro? thanks!

 

[yamahas]

The service manual on a 08 FX Nytro calls for 0.20 L (0.18 Imp qt, 0.21 US qt). If I remember correctly that's one bottle of the yamaha chain case oil.

Does not really answer your question about the lines on the dip stick, I have not seen the dip stick off the Nytro but I hope that helps!

 

[natedawgedog]

in my manual for the 09 nytro the level it should be at is in the "rev" area, no higher than the hash mark... assuming the oil is cold. I think the top part of the line is for when the oil is warm/hot... one bottle should do it tho.

 

[Off Trail Mike]

KE99

If your sled has Reverse, put it to the reverse line, if it doesn't have reverse, put it to the STD line.

Why? Here's my long winded antidotal evidence on this one: My '10 XTX (which has reverse) which was faithfully serviced by my dealer, always had the oil level up to the STD level and slightly higher. I ran it like that for the first season, but always got a whif of gear oil as I drove it, especially at higher speeds. I knew it was the chaincase, but with lots of clean oil in there, I didn't think too much of it.

Second season, got the sled serviced again, and again, same STD oil level and the same annoying smell. So I decided to drain the oil level down to REV line, and voila! Smell Gone! End of season came, and oil still looked very clean and none the worse for wear.

To move the oil level from STD to REV, took maybe 5 tablespoons, a few ml's. But after doing it, I got to thinking that the reverse chaincase has alot more "Stuff" inside of it, i.e gears, jackshaft, spacers, etc, so the actual volume inside the case for oil is much smaller than the STD chaincase.

I seem to remember that oil works well when it has enough room to work, but oil shear can cause the oil to heat up when its too agitated, so my thinking is that a smaller volume chaincase probably works better with slightly less oil.

I didn't check the chaincase when the level was high, but I suspect the oil was shearing, and heating up. The smell came from the air inside the case heating/expanding and venting out of the case. What I do know is with the level at REV, the chaincase runs warm, not hot, and everthing looks good.

I may get technical later this summer and get the oil analyzed, that way I can determine how everthing is working in there!

Hope this helps...,

OTM

 

[kingedwards99]

Thanks for the post, i was wondering do you get oil and residue on that side coming out of the vents? after a good ride it there seems to be black suoit on my vents which always get on the white part of my snowpants. or perhaps its break dust but i really don't see myself using the breaks all that much anyhow thanks for the reply.

 

[Off Trail Mike]

KE99

My suit is black, so I never really noticed, besides it is blacker on the clutch side due to belt dust. I'll have a look on the right side to see if there is any oil residue around the vents, but if there is, it's not much.

I'll check and post later.

OTM